Therefore,they are of polygenetic compound.
因此，它们是多因复成的。
In Multipoint forming,springback would be effectively minimized by alternate forming technology.
回弹是板材成形中不可避免的现象 ,在多点成形中 ,采用反复成形方法可以显著地减小回弹。
On the Polygenetic and Multiphase Characteristics of the Xiaosigou Cu-Mn Deposit, Pingquan County, Hebei;
论河北省平泉县小寺沟铜钼矿床的复成性和多期性
Using CVM to estimate the restoring cost of Maqu grassland;
玛曲草地生态系统恢复成本条件价值评估
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